Publications
The National Arboretum was listed as a DC Historic Site in 1968. The historic district was placed on the National Register in 1973.
Sixteenth Street Historic District Nominations, Historic District Brochure and Historic District Maps are accessible from this page.
The Sixteenth Street Historic District was listed on the National Register in 1978. In 2007 a Boundary Increase expanded the district.
The Union Market Terminal Historic District Design Guidelines outline compatible alterations in the Union Market Terminal Historic District: